/* === Site Header === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: transparent;
  border-bottom: none;
  display: flex;
  align-items: center;
  padding: 0 5%;
}

/* Gradient scrim behind nav — extends below the header for a soft fade */
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: calc(var(--nav-height) + 40px);
  background: linear-gradient(
    to bottom,
    rgba(16, 16, 32, 0.92) 0%,
    rgba(16, 16, 32, 0.7) 50%,
    rgba(16, 16, 32, 0.3) 75%,
    transparent 100%
  );
  z-index: -1;
  pointer-events: none;
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--width-max);
  margin: 0 auto;
}

/* === Logo === */
.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--light-100);
  letter-spacing: var(--tracking-snug);
}

.site-logo img {
  height: 40px;
  width: auto;
}

/* === Nav Menu === */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.site-nav__link {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--light-90);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
  text-decoration: none;
}

.site-nav__link:hover {
  color: var(--light-100);
  background: rgba(255, 255, 255, 0.05);
}

/* Search placeholder */
.site-nav__search {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--light-90);
  cursor: pointer;
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}
.site-nav__search:hover {
  color: var(--light-100);
  background: rgba(255, 255, 255, 0.05);
}
.site-nav__search svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
}

/* Hidden on desktop, shown in mobile menu */
.site-nav__link--mobile-only {
  display: none;
}

.site-nav__link--cta {
  color: var(--surface-95);
  background: var(--primary-100);
  font-weight: 600;
  padding: var(--space-8) var(--space-24);
  border-radius: var(--radius-full);
}

.site-nav__link--cta:hover {
  background: var(--primary-90);
  color: var(--surface-95);
}

/* === Mobile Menu Toggle === */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.menu-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--light-100);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast) ease;
  position: relative;
}

.menu-toggle__bar::before,
.menu-toggle__bar::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--light-100);
  border-radius: 1px;
  position: absolute;
  transition: inherit;
}

.menu-toggle__bar::before { top: -7px; }
.menu-toggle__bar::after  { top: 7px; }

/* Animate to X */
.menu-toggle.is-open .menu-toggle__bar { background: transparent; }
.menu-toggle.is-open .menu-toggle__bar::before {
  top: 0; transform: rotate(45deg);
}
.menu-toggle.is-open .menu-toggle__bar::after {
  top: 0; transform: rotate(-45deg);
}

/* === Footer === */
.site-footer {
  background-color: var(--surface-100);
  border-top: var(--border-subtle);
  padding: var(--space-80) 0 var(--space-40);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-40);
  margin-bottom: var(--space-64);
}

.site-footer__heading {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--light-100);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-20);
}

.site-footer__bio {
  font-size: var(--text-sm);
  color: var(--light-90);
  line-height: var(--leading-relaxed);
  max-width: 320px;
}

.site-footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.site-footer__link {
  font-size: var(--text-sm);
  color: var(--light-90);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

.site-footer__link:hover {
  color: var(--primary-100);
}

.site-footer__social {
  display: flex;
  gap: var(--space-16);
  margin-top: var(--space-8);
}

.site-footer__social a {
  color: var(--light-90);
  transition: color var(--duration-fast) ease;
}

.site-footer__social a:hover {
  color: var(--primary-100);
}

.site-footer__social svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-24);
  border-top: var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--light-80);
}

.site-footer__legal {
  display: flex;
  gap: var(--space-16);
  padding-right: var(--space-64);
}

.site-footer__legal a {
  color: var(--light-80);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

.site-footer__legal a:hover {
  color: var(--light-90);
}